GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2006 🢒 Yukon XL Denali 🢒 Engine 🢒 Engine Mechanical - 4.8L, 5.3L, and 6.0L 🢒 Valve Rocker Arm Cover Installation - Left Side

    Object Number: 1272820 Size: SH

    Important: 

       • All gasket surfaces should be free of oil or other foreign material during assembly.
       • DO NOT use the valve rocker arm cover gasket again.
       • If the vapor vent grommet has been removed from the valve rocker arm cover, install a NEW vapor vent gourmet during assembly.

  1. Install NEW valve rocker arm cover grommets and use NEW valve rocker arm cover bolts if they are serviced with the grommet.
  2. Install a NEW cover gasket (504) into the left valve rocker arm cover.

    3. Object Number: 1277108 Size: SH
  3. Install the valve rocker arm cover onto the cylinder head.

    4. Notice: Refer to Fastener Notice in the Preface section.

  4. Install the cover bolts with grommets.

    5. Tighten
    Tighten the valve rocker arm cover bolts to 12 N·m (106 lb in).


    Object Number: 1342458 Size: SH
  5. Apply threadlock GM P/N 12345382 (Canadian P/N 10953489), or equivalent, to the threads of the bracket studs.
  6. Install the ignition coils and bracket assembly and studs.

    7. Tighten
    Tighten the ignition coil and bracket assembly studs to 12 N·m (106 lb in).